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IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

$ ipcalc
Try:192.168.1.10/2410.0.0.0/8172.16.5.4/20203.0.113.9/29
IPv6 calculator →
private IP (RFC 1918)10.53.32.0/24
network10.53.32.0/24
broadcast10.53.32.255
first host10.53.32.1
last host10.53.32.254
subnet mask255.255.255.0
wildcard0.0.0.255
addresses256
usable hosts254
classA
ipcalc 10.53.32.0/24
address00001010.00110101.00100000.00000000
subnet mask11111111.11111111.11111111.00000000
network00001010.00110101.00100000.00000000
broadcast00001010.00110101.00100000.11111111
green = network part, grey = host part
hex0x0a352000
decimal171253760
reverse dns0.32.53.10.in-addr.arpa
ipv4-mapped::ffff:a35:2000

/24 split into /30 · 64 subnets

close ×
#networkhost rangebroadcast
110.53.32.0/3010.53.32.1 – 10.53.32.210.53.32.3
210.53.32.4/3010.53.32.5 – 10.53.32.610.53.32.7
310.53.32.8/3010.53.32.9 – 10.53.32.1010.53.32.11
410.53.32.12/3010.53.32.13 – 10.53.32.1410.53.32.15
510.53.32.16/3010.53.32.17 – 10.53.32.1810.53.32.19
610.53.32.20/3010.53.32.21 – 10.53.32.2210.53.32.23
710.53.32.24/3010.53.32.25 – 10.53.32.2610.53.32.27
810.53.32.28/3010.53.32.29 – 10.53.32.3010.53.32.31
910.53.32.32/3010.53.32.33 – 10.53.32.3410.53.32.35
1010.53.32.36/3010.53.32.37 – 10.53.32.3810.53.32.39
1110.53.32.40/3010.53.32.41 – 10.53.32.4210.53.32.43
1210.53.32.44/3010.53.32.45 – 10.53.32.4610.53.32.47
1310.53.32.48/3010.53.32.49 – 10.53.32.5010.53.32.51
1410.53.32.52/3010.53.32.53 – 10.53.32.5410.53.32.55
1510.53.32.56/3010.53.32.57 – 10.53.32.5810.53.32.59
1610.53.32.60/3010.53.32.61 – 10.53.32.6210.53.32.63
1710.53.32.64/3010.53.32.65 – 10.53.32.6610.53.32.67
1810.53.32.68/3010.53.32.69 – 10.53.32.7010.53.32.71
1910.53.32.72/3010.53.32.73 – 10.53.32.7410.53.32.75
2010.53.32.76/3010.53.32.77 – 10.53.32.7810.53.32.79
2110.53.32.80/3010.53.32.81 – 10.53.32.8210.53.32.83
2210.53.32.84/3010.53.32.85 – 10.53.32.8610.53.32.87
2310.53.32.88/3010.53.32.89 – 10.53.32.9010.53.32.91
2410.53.32.92/3010.53.32.93 – 10.53.32.9410.53.32.95
2510.53.32.96/3010.53.32.97 – 10.53.32.9810.53.32.99
2610.53.32.100/3010.53.32.101 – 10.53.32.10210.53.32.103
2710.53.32.104/3010.53.32.105 – 10.53.32.10610.53.32.107
2810.53.32.108/3010.53.32.109 – 10.53.32.11010.53.32.111
2910.53.32.112/3010.53.32.113 – 10.53.32.11410.53.32.115
3010.53.32.116/3010.53.32.117 – 10.53.32.11810.53.32.119
3110.53.32.120/3010.53.32.121 – 10.53.32.12210.53.32.123
3210.53.32.124/3010.53.32.125 – 10.53.32.12610.53.32.127
3310.53.32.128/3010.53.32.129 – 10.53.32.13010.53.32.131
3410.53.32.132/3010.53.32.133 – 10.53.32.13410.53.32.135
3510.53.32.136/3010.53.32.137 – 10.53.32.13810.53.32.139
3610.53.32.140/3010.53.32.141 – 10.53.32.14210.53.32.143
3710.53.32.144/3010.53.32.145 – 10.53.32.14610.53.32.147
3810.53.32.148/3010.53.32.149 – 10.53.32.15010.53.32.151
3910.53.32.152/3010.53.32.153 – 10.53.32.15410.53.32.155
4010.53.32.156/3010.53.32.157 – 10.53.32.15810.53.32.159
4110.53.32.160/3010.53.32.161 – 10.53.32.16210.53.32.163
4210.53.32.164/3010.53.32.165 – 10.53.32.16610.53.32.167
4310.53.32.168/3010.53.32.169 – 10.53.32.17010.53.32.171
4410.53.32.172/3010.53.32.173 – 10.53.32.17410.53.32.175
4510.53.32.176/3010.53.32.177 – 10.53.32.17810.53.32.179
4610.53.32.180/3010.53.32.181 – 10.53.32.18210.53.32.183
4710.53.32.184/3010.53.32.185 – 10.53.32.18610.53.32.187
4810.53.32.188/3010.53.32.189 – 10.53.32.19010.53.32.191
4910.53.32.192/3010.53.32.193 – 10.53.32.19410.53.32.195
5010.53.32.196/3010.53.32.197 – 10.53.32.19810.53.32.199
5110.53.32.200/3010.53.32.201 – 10.53.32.20210.53.32.203
5210.53.32.204/3010.53.32.205 – 10.53.32.20610.53.32.207
5310.53.32.208/3010.53.32.209 – 10.53.32.21010.53.32.211
5410.53.32.212/3010.53.32.213 – 10.53.32.21410.53.32.215
5510.53.32.216/3010.53.32.217 – 10.53.32.21810.53.32.219
5610.53.32.220/3010.53.32.221 – 10.53.32.22210.53.32.223
5710.53.32.224/3010.53.32.225 – 10.53.32.22610.53.32.227
5810.53.32.228/3010.53.32.229 – 10.53.32.23010.53.32.231
5910.53.32.232/3010.53.32.233 – 10.53.32.23410.53.32.235
6010.53.32.236/3010.53.32.237 – 10.53.32.23810.53.32.239
6110.53.32.240/3010.53.32.241 – 10.53.32.24210.53.32.243
6210.53.32.244/3010.53.32.245 – 10.53.32.24610.53.32.247
6310.53.32.248/3010.53.32.249 – 10.53.32.25010.53.32.251
6410.53.32.252/3010.53.32.253 – 10.53.32.25410.53.32.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /24
/00.0.0.04,294,967,2964,294,967,294-
/1128.0.0.02,147,483,6482,147,483,646-
/2192.0.0.01,073,741,8241,073,741,822-
/3224.0.0.0536,870,912536,870,910-
/4240.0.0.0268,435,456268,435,454-
/5248.0.0.0134,217,728134,217,726-
/6252.0.0.067,108,86467,108,862-
/7254.0.0.033,554,43233,554,430-
/8255.0.0.016,777,21616,777,214-
/9255.128.0.08,388,6088,388,606-
/10255.192.0.04,194,3044,194,302-
/11255.224.0.02,097,1522,097,150-
/12255.240.0.01,048,5761,048,574-
/13255.248.0.0524,288524,286-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,190-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,022-
/23255.255.254.0512510-
/24255.255.255.02562541
/25255.255.255.1281281262 split →
/26255.255.255.19264624 split →
/27255.255.255.22432308 split →
/28255.255.255.240161416 split →
/29255.255.255.2488632 split →
/30255.255.255.2524264 split →
/31255.255.255.25422128 split →
/32255.255.255.25511256 split →
02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →